NEC PX750U - 9. Appendix;  Throw distance and screen size

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9. Appendix
 Throw distance and screen size
Sixseparatebayonetstylelensescanbeusedonthisprojector.Refertotheinformationonthispageandusealens
suitedfortheinstallationenvironment(screensizeandthrowdistance).Forinstructionsonmountingthelens,see
page154.
Eachnumberprovidedinthetablebelowmeansthethrowdistancebetweenthelenssurfaceandthescreen.
Lens types and throw distance
unit=m
Screensize Lensmodelname
NP16FL NP17ZL NP18ZL NP19ZL NP20ZL NP21ZL
50" 0.8
1.3–1.9 1.8–2.4 2.4–4.0 3.8–5.8 5.6–8.9
60" 1.0 1.6–2.3 2.2–2.9 2.8–4.8 4.6–7.0 6.8–10.7
80" 1.3 2.2–3.1 3.0–3.9 3.8–6.4 6.2–9.3 9.1–14.4
100" 1.7 2.7–3.9 3.7–4.9 4.8–8.0 7.7–11.7 11.5–18.1
120" 2.0 3.3–4.7 4.5–5.9 5.8–9.6 9.3–14.1 13.8–21.7
150" 2.5 4.1–5.8 5.6–7.4 7.2–12.0 11.7–17.6 17.4–27.3
200" 3.4 5.5–7.8 7.5–9.9 9.7–16.1 15.6–23.5 23.3–36.4
240" 4.1 6.6–9.4 9.1–11.9 11.6–19.3 18.8–28.3 28.0–43.8
300" 5.1 8.2–11.7 11.3–14.9 14.5–24.1 23.5–35.4 35.0–54.8
TIP
Calculationofthethrowdistancefromthescreensize
NP16FLlensthrowdistance(m)=H×0.8:0.8m(min.)to5.1m(max.)
NP17ZLlensthrowdistance(m)=H×1.3toH×1.8:1.3m(min.)to11.7m(max.)
NP18ZLlensthrowdistance(m)=H×1.7toH×2.3:1.8m(min.)to14.9m(max.)
NP19ZLlensthrowdistance(m)=H×2.2toH×3.7:2.4m(min.)to24.1m(max.)
NP20ZLlensthrowdistance(m)=H×3.6toH×5.4:3.8m(min.)to35.4m(max.)
NP21ZLlensthrowdistance(m)=H×5.3toH×8.3:5.6m(min.)to54.8m(max.)
“H”(Horizontal)referstothescreenwidth.
*Figuresdifferbyseveral%withthetableabovebecausethecalculationisapproximate.
Ex.:Throwdistancewhenprojectingona150"screenusingtheNP18ZLlens:
Accordingtothe“ScreenSize(forreference)”table(→ page 206),H(screenwidth)=323.1cm.
Thethrowdistanceis323.1cm×1.7to323.1cm×2.3=549.3cmto743.13cm(becauseofthezoomlens).